DIN ISO 18589-3:2009-02

National foreword
National Annex NA (informative) Relationship between
                  European Standards and International
                  Standards
National Annex NB (informative) Bibliography
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Principle
5 Gamma-spectrometry equipment
6 Sample container
7 Procedure
  7.1 Packaging of samples for measuring purposes
  7.2 Laboratory background level
  7.3 Calibration
  7.4 Measurements of and corrections for natural
      radionuclides
8 Expression of results
  8.1 Calculation of the activity per unit of mass
  8.2 Standard uncertainty
  8.3 Decision threshold
  8.4 Detection limit
  8.5 Confidence limits
  8.6 Corrections for contributions from other
      radionuclides and background
9 Test report
Annex A (informative) Calculation of the activity per unit
        mass from a gamma spectrum using a linear
        background subtraction
Annex B (informative) Analysis of natural radionuclides
        in soil samples using gamma spectrometry
Bibliography

Defines the identification and the measurement of the activity in soils of a large number of gamma-emitting radionuclides using gamma spectrometry.